diff options
| author | swallace <swallace@FreeBSD.org> | 1996-12-08 02:24:10 +0000 |
|---|---|---|
| committer | swallace <swallace@FreeBSD.org> | 1996-12-08 02:24:10 +0000 |
| commit | 7fc4332dc6001ce72a0d933b6b6fabbb086a239d (patch) | |
| tree | 0a0244e9391313b30a9cafbe36d73975068e1b26 /sys/i386/ibcs2/ibcs2_signal.c | |
| parent | d122df8af42b806634429c382d10e40605085db3 (diff) | |
| download | FreeBSD-src-7fc4332dc6001ce72a0d933b6b6fabbb086a239d.zip FreeBSD-src-7fc4332dc6001ce72a0d933b6b6fabbb086a239d.tar.gz | |
Perform special sigset() check.
Make sure signal is not blocked. If it is, return SIG_HOLD instead
of handler and unblock the signal.
Diffstat (limited to 'sys/i386/ibcs2/ibcs2_signal.c')
| -rw-r--r-- | sys/i386/ibcs2/ibcs2_signal.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/sys/i386/ibcs2/ibcs2_signal.c b/sys/i386/ibcs2/ibcs2_signal.c index 6ed9930..ca791d5 100644 --- a/sys/i386/ibcs2/ibcs2_signal.c +++ b/sys/i386/ibcs2/ibcs2_signal.c @@ -25,7 +25,7 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * - * $Id: ibcs2_signal.c,v 1.5 1995/10/21 05:01:57 swallace Exp $ + * $Id: ibcs2_signal.c,v 1.6 1995/10/21 20:33:43 swallace Exp $ */ #include <sys/param.h> @@ -309,17 +309,29 @@ ibcs2_sigsys(p, uap, retval) if (signum != SIGALRM) sa.sa_flags |= SA_RESTART; #endif + *retval = (int)IBCS2_SIG_ERR; /* init error return */ + + /* perform native sigaction() */ if ((error = copyout(&sa, nbsa, sizeof(sa))) != 0) return error; if ((error = sigaction(p, &sa_args, retval)) != 0) { DPRINTF(("signal: sigaction failed: %d\n", error)); - *retval = (int)IBCS2_SIG_ERR; return error; } if ((error = copyin(obsa, &sa, sizeof(sa))) != 0) return error; *retval = (int)sa.sa_handler; + + /* special sigset() check */ + if(IBCS2_SIGCALL(SCARG(uap, sig)) == IBCS2_SIGSET_MASK) + /* check to make sure signal is not blocked */ + if(sigismember(&p->p_sigmask, signum)) { + /* return SIG_HOLD and unblock signal*/ + *retval = (int)IBCS2_SIG_HOLD; + p->p_sigmask &= ~sigmask(signum); + } + return 0; } |
